ASTM G34-01

    Standard Test Method for Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum Alloys (EXCO Test)

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    1. Scope

    1.1 This test method describes a procedure for constant immersion exfoliation corrosion (EXCO) testing of high-strength 2XXX and 7XXX series aluminum alloys.

    Note 1—This test method was originally developed for research and development purposes; however, it is referenced, in specific material specifications, as applicable for evaluating production material (refer to Section 14 on Precision and Bias).

    1.2 This test method applies to all wrought products such as sheet, plate, extrusions, and forgings produced from conventional ingot metallurgy process.

    1.3 This test method can be used with any form of specimen or part that can be immersed in the test solution.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1193 Specification for Reagent Water

    E3 Guide for Preparation of Metallographic Specimens

    G15 Terminology Relating to Corrosion and Corrosion Testing

    G112 Guide for Conducting Exfoliation Corrosion Tests in Aluminum Alloys

    ICS Code

    ICS Number Code 77.120.10 (Aluminium and aluminium alloys)

    UNSPSC Code

    UNSPSC Code 41114604(Corrosion testers)

    DOI: 10.1520/G0034-01

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